There is no paint code for the rear hat rims. Originally, they were cad plated. Ditto for the original early 6-loop rims as well. Restorers use a good wheel paint like the CASE SILVER ARGENT I used shown in my picture below. Avoid the cheap metallic shades as they will fade and rub off after two years. ALL lug nuts were cad plated too -no paint on 9N,2N, or 8N. 9N/2N front wheels were painted Ford M2888 Dark Gray. 8N front rims painted Ford Medium (8N) Gray.